A rocket moving vertically -- Find the cosmonaut's weight

  • Thread starter Thread starter inv4lid
  • Start date Start date
  • Tags Tags
    Rocket Weight
Click For Summary

Homework Help Overview

The problem involves calculating the weight of a cosmonaut inside a rocket that is accelerating vertically at 22 m/s² during launch. The context is rooted in the chapter on elasticity and the effects of forces acting on a mass in motion.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the relationship between weight, mass, and acceleration, with one participant attempting to apply the equation for normal force. There is also a question raised about the definition of weight.

Discussion Status

The discussion reflects a mix of attempts to clarify the problem and explore the implications of the calculations presented. Some participants express confusion about the original poster's uncertainty, while others suggest that the calculations provided may already address the question posed.

Contextual Notes

There is an emphasis on understanding the definitions and relationships between weight, mass, and acceleration, with some participants questioning the completeness of the original poster's reasoning.

inv4lid
Messages
19
Reaction score
0

Homework Statement


A rocket during launch from the Earth's surface moves vertically with an acceleration of 22m / s ^ 2. Find the cosmonaut's weight inside the cabin if his mass is 90kg.

Homework Equations


The problem belongs to "Elasticity. Moving under the action of elastic force" chapter.
General gravity relating to man = 900N;
N - G = ma?
N = m(a+g)
N = 90*(22+10) = 2880 N

The Attempt at a Solution


No idea currently, trying to solve[/B]
 
Last edited:
Physics news on Phys.org
inv4lid said:

Homework Statement


A rocket during launch from the Earth's surface moves vertically with an acceleration of 22m / s ^ 2. Find the cosmonaut's weight inside the cabin if his mass is 90kg.

Homework Equations


The problem belongs to "Elasticity. Moving under the action of elastic force" chapter.
General gravity relating to man = 900N;
N - G = ma?
N = m(a+g)
N = 90*(22+10) = 2880 N

The Attempt at a Solution


No idea currently, trying to solve[/B]

What the definition of weight?
 
  • Like
Likes   Reactions: inv4lid
What do you mean ”no idea”? You essentially solved it.
 
  • Like
Likes   Reactions: inv4lid
Orodruin said:
What do you mean ”no idea”? You essentially solved it.
Just got it, ty anyway
 
Orodruin said:
What do you mean ”no idea”? You essentially solved it.

There's solving a problem and knowing you've solved it!
 
  • Like
Likes   Reactions: inv4lid
PeroK said:
There's solving a problem and knowing you've solved it!
I think the two are the same (as long as you got it right). Hence the addition of the ”essentially” - the remaining step being to realize that what was computed was the sought quantity.
 
  • Like
Likes   Reactions: inv4lid

Similar threads

  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 23 ·
Replies
23
Views
8K
Replies
3
Views
5K
  • · Replies 24 ·
Replies
24
Views
8K
  • · Replies 1 ·
Replies
1
Views
9K
  • · Replies 6 ·
Replies
6
Views
5K
  • · Replies 28 ·
Replies
28
Views
4K